Novel process
Assignees.a. Texaco Belgium n.v.
InventorJohny C. Hermans
Life of this patent
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Abstract
Polymers, particularly useful as flame-proofing agents, are prepared by the reaction of a bis-epoxide with a phosphorus-containing bispiperazide.
Claims17
Polymers containing units of the formula ##STR24## wherein X represents an oxygen or sulphur atom, or a group of the formula >N--R in which R represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group or a heterocyclic group, or X may be absent;
- Y represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group, or a heterocyclic group;
- a group of the formula --NHR or --NR.sub.2 in which R has the meaning given above, or in which the two groups R and the nitrogen atom to which they are attached represent a N-containing heterocyclic group;
- a group of the formula --OR in which R has the meaning given above;
- or
- a group of the formula ##STR25## R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represents a hydrocarbon substituent on a piperazine ring;
- n.sup.1, n.sup.2 and n.sup.3 each represents zero or an integer;
- and
- Q represents the residue of a symmetrical or unsymmetrical bis-epoxide.
A process for the production of polymers which comprises reacting a bis-epoxide with a diamine of the formula ##STR29## wherein X represents an oxygen or sulphur atom, or a group of the formula >N--R in which R represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group or a heterocyclic group, or it may be absent;
- Y represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group, or a heterocyclic group;
- a group of the formula --NHR or --NR.sub.2 in which R has the meaning given above, or in which the two groups R and the nitrogen atom to which they are attached represent a N-containing heterocyclic group;
- a group of the formula --OR in which R has the meaning given above;
- or a group of the formula ##STR30## R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represents a hydrocarbon substituent on a piperazine ring;
- n.sup.1, n.sup.2 and n.sup.3 each represents zero or an integer.
Dependencies are inferred from the claim text.